body{
    margin: 0;
}
.all-cont{
    width: 500px;
    height: 250px;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -125px;
    margin-left: -250px;

}
.all-cont .jg{
    width: 150px;
    height: 150px;
    background: url(../images/cw.png) no-repeat;
    margin: 0 auto;
    margin-bottom: 20px;
}
.all-cont .cont{
    width: 100%;
    height: 30px;
    line-height: 30px;
    margin: 0 auto;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
}